Dinner in a Pumpkin

1 small to medium pumpkin (about 9 lbs)
1 onion chopped
1 1/2 - 2 lb lean ground beef
2 TBSP soy sauce
1 1/2 cup cooked rice
2 TBSP brown sugar
1 (4oz) can sliced mushrooms, drained
1 can cream of chicken soup
1 (8oz) can sliced water chestnuts, drained

Cut off top to pumpkin and thoroughly clean out seeds and pulp. In a large skillet, brown hamburger and onion; drain. Add soy sauce, brown sugar, mushrooms, and soup. simmer 10 minutes, stirring occasionally. Add cooked rice and water chestnuts. Spoon mixture into pumpkin shell. Replace pumpkin top and place entire pumpkin, with filling, on a baking sheet. Bake 1 hour, or until inside meat of the pumpkin is tender. Put pumpkin on plate. Remove lid and serve meat. For your vegetable, slice cooked pumpkin; serve with butter and salt/pepper or brown sugar.